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AutoDome 100 Series Fixed Camera
Figure 5.4 Connections for RS232 Operation
1
2
3
4
5
6
Figure 5.5 Position of CPU Switch for RS232 Operation (camera module not shown for clarity)
1
2
3
4
Note: To access the CPU switch you must remove the bubble from the pendant housing. Refer
to the procedure on Page 73.
5.4.3
Controlling the AutoDome via the RS485 Protocol
2-wire (shielded), half-duplex, differential, multi-drop (32 nodes), 4000 ft cable limit)
RS485 is capable of controlling a true multi-drop network and is specified for up to 32 drivers
and 32 receivers on a single 2-wire bus. The AutoDome uses the 2-wire mode, although RS485
can be connected in a 2- or 4-wire mode.
NOTICE!
The wire shield must be tied to signal at both ends, if 2-wire twisted pair is used. After
connecting the wires for RS485 operation, make sure the slide switch on the main board to
the camera head is positioned toward the LEDs (default).
Bosch Security Systems, Inc.
C- (Biphase)
C+ (Biphase)
Earth Ground
RxD
TxD
Signal Ground
Switch Location
LEDs
RS232
CPU Module
Installation Manual
7
AutoDome Data In/Out
8
P105/P106 Connector
9
Head End RS232
10
TxD
11
RxD
12
Ground
Cable and Wire Standards | en
F.01U.217.818 | 1.0 | 2011.04
65
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